Page 395 - Gas Detection Systems Training Manual

II. GENERAL DESCRIPTION
CONVENTIONS
The following conventions are used in this manual.
Warning Statement VDC (DC Voltage)
SEC 3500 HMI
The SEC3500 HMI Operator Interface, an Attendant-Monitored system, continuously interrogates up to 254 system devices over the 9600 baud RS485 Modbus Interface. The OI, operating as the Modbus Master, can communicate with any SEC3XXX Device and any 4-20 transmitter via the SEC3100AIM.
There is a power indicator LED located on the front panel of the 3500.
Network devices can be interrogated, configured, and calibrated using the password protected touchscreen user interface.
16 embedded programmable relays provide external device control/interface based on network events. Additional relays can be located anywhere on the network (groups of 8).
The Statcast RS232 interface continuously scrolls through system operating status. (Read only for the user)
An Ethernet port allows remote access to system screens.
The SEC3500 HMI refers to the system as a whole, not just the SEC3500 (what is inside the metal enclosure).
WARNING: SUBSTITUTION OF COMPONENTS MAY IMPAIR SAFETY
SEC P/N: 1460014
Rev / ECO: A / 000209
Page 6 of 26